<div dir="ltr">Simplest way to do it is probably two threshold filters. One on x, the the other on y (either order). Then specify the color as normal with y as the input to the lookup table. Another alternative that comes to mind is using a vtkArrayCalculator with an <span style="color:rgb(0,0,0);font-family:sans-serif;font-size:13px;line-height:19px">if(condition,true_expression,false_expression) to make a derived attribute that you cull off of directly.</span><div style>
<br></div><div style><br></div></div><div class="gmail_extra"><br clear="all"><div>David E DeMarle<br>Kitware, Inc.<br>R&D Engineer<br>21 Corporate Drive<br>Clifton Park, NY 12065-8662<br>Phone: 518-881-4909</div>
<br><br><div class="gmail_quote">On Tue, Sep 17, 2013 at 2:45 AM, Perryn Fowler <span dir="ltr"><<a href="mailto:pezlists@gmail.com" target="_blank">pezlists@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><br clear="all"><div>I have some volume data that has 2 scalar values (x and y) at each voxel.</div><div><br></div><div>I want to be able to render the volume where the colour is determined by the x value.</div>
<div>I also want to be able to show only parts of the volume that meet range criteria on both values. I don't mind if this is done via thresholding or opacity.<br></div><div><br></div><div>For example, I want to be able to say thing like:</div>
<div><br></div><div>"Only show voxels for which the x value is between 10 and 20 AND the y value is between 0.5 and 0.6. Set the colour of the shown voxels based on the x value"</div><div><br></div><div>I have confused myself looking through the documentation to see if this can be done - any pointers would be greatly appreciated :)</div>
<div><br></div><div>cheers</div><span class="HOEnZb"><font color="#888888"><div>Perryn</div><div><br></div></font></span></div>
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